Ok, so something 'new' is how you apply that category, since other Steem projects have already done that.

For caching, pulling data from the blockchain should be obtained from the blockchain as it changes, why would I cache that? I don't think Steem or Busy cache the blockchain data on their own servers, do they?

JS and CSS chunking I'll have to look into, as I'm not familiar with how that works. Thanks for the suggestions!